Check out this awesome tool that [Alfonso Martone] built and wrote in to tell us about: a pin plotter made entirely from Lego (except for the addition of a pin in one brick). [Alfonso] has managed to get 33dpi resolution with a “printable” area of 90x70mm. The NXT device reads 1bit bitmapped images in PBM format and outputs onto a sheet of paper, which is held in place by Lego pneumatics pushing against rubber Lego bricks. Output is not what you might call speedy, though: it takes 35-40 minutes to output a drawing with 1,500 holes.
